Book digitized by Google from the library of University of California and uploaded to the Internet Archive by user tpb. Topics: Oscillations, Electric waves Source: http://books.google.com/books?id=IVxDAAAAIAAJ&oe=UTF-8
Images: L97-3530, L97-3531, L97-3532, L97-3533 and L97-3534 are available as electronic files from the photo lab. See URL. -- Photographed on: 10/27/97. -- 10" NACA 0015 with 30% chord trailing edge flap deflected 20 degrees. Used in 0.3 Meter Transonic Cryogenic Tunnel, this airfoil has a 0.44 mm slot at 70% chord. Oscillatory blowing out of slot used for separation control. Howard Price appears in side view shot, in building 1145, Studio. Topic: AIRFOIL PROFILES -- AIRFOIL OSCILLATIONS
This paper refers to experiments carried out daring 1909-1910 between the Fesscnden high-power station at Brant Hock and the U.S. cruisers /b Birmingham/ and /b Salem/. A series of experiments enabled data to be obtained as to the laws governing the radiation and reception of electric waves, and the subject of atmospheric absorption up to a distance of 1000 miles to be studied. At Brant Rock 50 to 60 kw. were employed, the two ships' stations being equipped with 10-kw. 500-~ motor-generators. A... Topics: radiotelegraphy, oscillations and waves (electric)/ B6210F Telegraphy
Leonard Strauss Wave Generation & Shaping McGraw-Hill Book Company Inc. 1960 Acrobat 7 Pdf 15.9 Mb. Scanned by artmisa using Canon DR2580C + flatbed option Topics: Electronics, Oscillations, Memory, Switching, Shaping, Timing
The relation between the energy of oscillation in two coupled circuits and the coefficient of coupling is investigated. The primary aircraft is excited by means of a vibrator worked by an electromagnet, and this circuit excites the two coupled circuits under observation. The arrangement is taken as representing a sender and a receiving circuit with a detector circuit coupled to it. It is the energy relations in the last two which are studied. A Pt-Te thermo-couple or a zincite-chalcopyrite... Topics: radiotelegraphy, oscillations and waves (electric)/ B6210F Telegraphy
In this paper, the effects of a newly presented structure of unified power flow controller (UPFC) which is based on two shunt voltage-source converters and a series capacitor, are investigated on the dynamic stability of power system. A power system including the newly presented structure of UPFC is introduced to examine this. The non-linear dynamic model of the system under investigation and its non-linear equations are presented as well. The linear equations are achieved by... Topics: UPFC Modeling, FACTS Device, Electromechanical Oscillations Damping, Low Frequency Oscillations,...
An expression for the ratios of the reflected and transmitted waves to the incoming wave at a transition point is developed in a simple manner. The paper cannot be fittingly abstracted. Topic: oscillations and waves (electric)/ B7500 Medical physics and biomedical engineering
Social foraging behaviour of Escherichia coli bacteria has recently been explored to develop a novel algorithm for optimization and control. One of the major driving forces of Bacterial Foraging Optimization Algorithm (BFOA) is the chemotactic movement of a virtual bacterium that models a trial solution of the optimization problem. However, during the process of chemotaxis, the BFOA depends on random search directions which may lead to delay in reaching the global solution. This paper... Topics: SSSC, Particle Swarm Optimization, Bacterial Foraging, Hybrid Algorithm, Damping Oscillations
C'est exceptionnel, mais pour une fois, nous nous éloignons un peu du jeu de rôle... Vous le savez peut être si vous suivez ce blog avec assiduité, depuis maintenant près de deux mois nous travaillons aussi pour une webradio geek répondant au doux nom de "Play". C'est une radio que nous soutenons depuis sa création et nous offrons à Play, chaque semaine, une émission inédite de la Cellule sur le jeu de rôle papier (à 20H tous les dimanches, ne les ratez pas !).... Topics: Podcast, Jdr, Play, Nolife, Macha, Oscillations, Cellule, Sens
Mathematical model for elastic shear bending of trapezoidally corrugated plate with trough lines held straight including stiffness and stress analysis Topics: ECHOES, RELATIVISTIC EFFECTS, TIME FUNCTIONS, ELECTRON DISTRIBUTION, KINETIC EQUATIONS, OSCILLATIONS
The author obtains a complete solution of the problem of coupled circuits-direct-coupled circuits as well as those coupled electromagnetically-by a method which avoids the difficulty of getting the roots of a biquadratic equation. Both cases are fully worked out. The paper is altogether mathematical and cannot be abstracted. Topic: oscillations and waves (electric)/ B7500 Medical physics and biomedical engineering
The use of a high molecular weight test gas to increase the Reynolds number range of transonic wind tunnels is explored. Modifications to a small transonic wind tunnel are described and the real gas properties of the example heavy gas (sulfur hexafluoride) are discussed. Sulfur hexafluoride is shown to increase the test Reynolds number by a factor of more than 2 over air at the same Mach number. Experimental and computational pressure distributions on an advanced supercritical airfoil... Topics: BOOSTGLIDE VEHICLES, TRAJECTORY ANALYSIS, OSCILLATIONS, HYPERSONIC GLIDERS, AIR BREATHING ENGINES
byChou, J. L.; Stad, N. J.; Barnes, P. R.; Leftheriotis, G. P. N.; Arndt, N. F.; Simonson, S.; Greenleaf, J. E
Spaceflight and bed-rest deconditioning decrease maximal oxygen uptake (aerobic power), strength, endurance capacity, and orthostatic tolerance. In addition to extensive use of muscular exercise conditioning as a countermeasure for the reduction in aerobic power (VO(sub 2max)), stimuli from some form of Gz acceleration conditioning may be necessary to attenuate the orthostatic intolerance component of this deconditioning. Hypothesis: There will be no significant difference in the physiological... Topics: JET VANES, OSCILLATIONS, ROCKET ENGINES, DEFLECTION, TORQUE, LOSSES
An experimental investigation of the conditions for the production of oscillations by means of an arc placed (1) in air, (2) in hydrogen, (3) in steam, (4) in compressed air. In air the arc was formed (240-volt circuit) with electrodes of solid carbon, cored carbon copper, graphite, and copper as anode with carbon kathode. In all cases oscillations of frequency 100,000 per sec. were obtained, thus confirming Salomonson's results, but only in the case of graphite electrodes were steady... Topics: radiotelegraphy, discharges (electric), oscillations and waves (electric)/ B6210 Telecommunication...
This paper presents the use of a scanning laser vibrometer and a signal decomposition method to characterize non-linear dynamics of highly flexible structures. A Polytec PI PSV-200 scanning laser vibrometer is used to measure transverse velocities of points on a structure subjected to a harmonic excitation. Velocity profiles at different times are constructed using the measured velocities, and then each velocity profile is decomposed using the first four linear mode shapes and a least-squares... Topics: DYNAMIC MODELS, HYBRID PROPULSION, STABILITY, ROCKET VEHICLES, LOW FREQUENCIES, OSCILLATIONS
bySAFRONOV, Y. P.; SUKHANOV, Y. A.; POLUARSHINOV, V. A.; MAKSYUTOV, I. B
THE POSSIBILITY OF USING LASERS FOR VARIOUS COMMUNICATION, LOCATION AND TRACKING SYSTEMS IS NOTED. ATMOSPHERIC TRANSMISSION AT VARIOUS ZENITH ANGLES WAS MEASURED BY RECORDING SOLAR RADIATION OF APPROPRIATE WAVELENGTHS. THE FOLLOWING CONCLUSIONS WERE REACHED: (1) FOR ZENITH ANGLES OF ABOUT 34 DEG, THE TRANSMISSION OF THE WHOLE ATMOSPHERE FOR RUBY LASER RADIATION IS NOT LESS THAN 0.8; FOR THE HELIUM-NEON LASER AT ANGLES UP TO 73 DEG, THE TRANSMISSION COEFFICIENT IS 0.6; (2) THE POSSIBILITY OF... Topics: GRAVITY GRADIENT SATELLITES, OSCILLATIONS, ATTITUDE STABILITY, DISTORTION, TEMPERATURE...